Kernrechtsfrage
Whether the appellants had standing before the Federal Tribunal to challenge the no-bill and the cantonal review decision.
Extrahierter Entscheid
They could not challenge the assessment of evidence or the merits because they lacked a legally protected interest; only formal rights could be invoked, and their civil claims against the individual staff were excluded by public-law liability rules.
Extrahierte Begründung
The criminal action belongs to the public prosecutor. A victim may only appeal where the decision can affect civil claims. Here, Vaud public-law liability for CHUV staff excluded direct personal civil actions, so the appellants could invoke only formal procedural rights.